Doctors performed an emergency C-section to deliver the premature infant after a BMW sedan slammed into the cab carrying expectant parents Nachman and Raizy Glauber, who were on their way to the hospital because the mother-to-be felt ill. The boy had been in intensive care since the delivery.

Police are still looking for the driver who struck the cab at the intersection of Wilson Street and Kent Avenue in Williamsburg, police said. Police said they are looking for Julio Acevedo, a 44-year-old Brooklyn man who served time in prison for a 1987 shooting death.

Sources said the BMW was speeding at more than 60 mph when it hit the cab.

Authorities have said a male driver and a passenger in the BMW fled the scene of the accident on foot.

Raizy Glauber was thrown from the car and her body landed under a parked tractor-trailer, witnesses said. Nachman Glauber was pinned in the car, and emergency workers had to cut off the roof to get him out, witnesses told police.

Nachman Glauber was pronounced dead at Beth Israel Hospital, while his wife died at Bellevue, police said. The couple's son was pronounced dead a day later, his death ruled extreme prematureness due to maternal blunt force injuries.

'God's will'Hours after the infant's death, Joseph Silverstein, Raizy Glauber's older brother, told NBC 4 New York in the hallway of the couple's building that "this is God's will."

Silverstein said he and other family members were able to see the baby before he passed away, but he declined to elaborate.

The driver of the livery cab survived the crash. He was taken to Beth Israel Hospital in stable condition, police said.

Police said Takia Walker, 29, of the Bronx, owned the BMW involved in the fatal crash but was not behind the wheel. She was arrested early Monday on insurance fraud charges, accused of allowing a third party who was not on her vehicle insurance policy to drive her car.

Sara Glauber also said her cousin and his bride had a unique connection, and that it was appropriate they died together. "If one had to go, the other had to go too because they really were one soul," she said.